Should I worry? My pre pregnancy weight was 109. I now weigh 128 I put on 19 pounds and I'm 23 weeks…

Should I worry?

My pre pregnancy weight was 109. I now weigh 128 I put on 19 pounds and I'm 23 weeks 5 days. This week at the doctor instead of gaining I lost a pound the doctor was not concerned because I had a huge growth spurt and gained 10 pounds last month, and said I'm probably just slowing down. I'm a little concerned should I be?